1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /*
3  * Copyright (c) 2017 Mellanox Technologies Ltd. All rights reserved.
4  */
5 
6 #include "rxe.h"
7 #include "rxe_hw_counters.h"
8 
9 static const char * const rxe_counter_name[] = {
10 	[RXE_CNT_SENT_PKTS]           =  "sent_pkts",
11 	[RXE_CNT_RCVD_PKTS]           =  "rcvd_pkts",
12 	[RXE_CNT_DUP_REQ]             =  "duplicate_request",
13 	[RXE_CNT_OUT_OF_SEQ_REQ]      =  "out_of_seq_request",
14 	[RXE_CNT_RCV_RNR]             =  "rcvd_rnr_err",
15 	[RXE_CNT_SND_RNR]             =  "send_rnr_err",
16 	[RXE_CNT_RCV_SEQ_ERR]         =  "rcvd_seq_err",
17 	[RXE_CNT_COMPLETER_SCHED]     =  "ack_deferred",
18 	[RXE_CNT_RETRY_EXCEEDED]      =  "retry_exceeded_err",
19 	[RXE_CNT_RNR_RETRY_EXCEEDED]  =  "retry_rnr_exceeded_err",
20 	[RXE_CNT_COMP_RETRY]          =  "completer_retry_err",
21 	[RXE_CNT_SEND_ERR]            =  "send_err",
22 	[RXE_CNT_LINK_DOWNED]         =  "link_downed",
23 	[RXE_CNT_RDMA_SEND]           =  "rdma_sends",
24 	[RXE_CNT_RDMA_RECV]           =  "rdma_recvs",
25 };
26 
27 int rxe_ib_get_hw_stats(struct ib_device *ibdev,
28 			struct rdma_hw_stats *stats,
29 			u8 port, int index)
30 {
31 	struct rxe_dev *dev = to_rdev(ibdev);
32 	unsigned int cnt;
33 
34 	if (!port || !stats)
35 		return -EINVAL;
36 
37 	for (cnt = 0; cnt  < ARRAY_SIZE(rxe_counter_name); cnt++)
38 		stats->value[cnt] = atomic64_read(&dev->stats_counters[cnt]);
39 
40 	return ARRAY_SIZE(rxe_counter_name);
41 }
42 
43 struct rdma_hw_stats *rxe_ib_alloc_hw_stats(struct ib_device *ibdev,
44 					    u8 port_num)
45 {
46 	BUILD_BUG_ON(ARRAY_SIZE(rxe_counter_name) != RXE_NUM_OF_COUNTERS);
47 	/* We support only per port stats */
48 	if (!port_num)
49 		return NULL;
50 
51 	return rdma_alloc_hw_stats_struct(rxe_counter_name,
52 					  ARRAY_SIZE(rxe_counter_name),
53 					  RDMA_HW_STATS_DEFAULT_LIFESPAN);
54 }
55